The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 1990
Filed:
Sep. 04, 1987
Masaaki Tanaka, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A control unit of a copying machine, including an optical scanning mechanism for scanning a manuscript surface having a picture image; a photosensitive substance rotating synchronously with scanning of the optical scanning mechanism, on which an electrostatic latent image corresponding to the picture image is formed; developing apparatus for developing the electrostatic latent image; first reference signal generator for generating a first reference signal representing a rotational reference position of the photosensitive substance rotated synchronously with the rotation of the photosensitive substance; first controller for controlling a rotational position of the photosensitive substance according to the reference signal generated from the reference signal generator; transfer apparatus for transferring an image developed through the developing apparatus to a recording paper; second reference signal generator for generating a second reference signal representing a reference for forming an initiation position of the electrostatic latent image; third reference signal generator for generating a third reference signal representing a reference for a transfer initiation position sychronously with the transfer operation of the transfer apparatus; and timing signal generator for generating timing signals representing a grip timing for the recording paper synchronously with the transfer operation of the transfer apparatus.